package lab8;
/*
 * Bai1
 * @author: nguyentrongtri
 * @created date: 2014/06/07
 */
public interface List<T extends Comparable<T>>  {
	public void addFirst(T item);
	public void addLast(T item);
	public void insertAfter(T key, T item);
	public void insertBefore(T key, T item);
	public void remove(T key);
	public void removeFirst();
	public void removeLast();
	public String toString();

}
